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Stand-alone quasi-static tester

a quasi-static tester and tester technology, applied in the functional testing of recording heads, instruments, record information storage, etc., can solve the problems of time-consuming dynamic testing, inconvenient use, and inability to warrant a full suite of tests

Inactive Publication Date: 2009-05-12
GUZIK TECHN ENTERPRISES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a stand-alone tester for testing a head gimbal assembly (HGA) used in a hard drive. The tester uses a camera to capture images of the HGA and identifies it using optical recognition. The tester can perform dynamic testing or qualify the HGA for dynamic testing based on the results of the static testing. The tester is easy to use, cost-effective, and can quickly and consistently provide results. It allows for easy prescreening of HGA parts before assembly into drives. The technical effects of the invention include improved testing efficiency, reduced testing time, and improved accuracy in identifying and qualifying HGAs."

Problems solved by technology

However, dynamic testing is time consuming and because of this expensive.
If an HGA does not function well, a full suite of tests are not warranted.
Also, if the HGA is not tested under the same conditions, then the results will not be useful in qualifying the HGA for dynamic testing or placing in a drive.

Method used

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Examples

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Embodiment Construction

[0012]The invention can be implemented in numerous ways, including as a process, an apparatus, a system, a composition of matter, a computer readable medium such as a computer readable storage medium or a computer network wherein program instructions are sent over optical or communication links. In this specification, these implementations, or any other form that the invention may take, may be referred to as techniques. A component such as a processor or a memory described as being configured to perform a task includes both a general component that is temporarily configured to perform the task at a given time or a specific component that is manufactured to perform the task. In general, the order of the steps of disclosed processes may be altered within the scope of the invention.

[0013]A detailed description of one or more embodiments of the invention is provided below along with accompanying figures that illustrate the principles of the invention. The invention is described in conne...

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Abstract

A quasi-static tester is disclosed. The quasi static tester comprises: a mount configured to fix a head gimbal assembly in a given position; a camera configured to observe the head gimbal assembly when the head gimbal assembly is fixed in the mount, wherein the camera is used to position the head gimbal assembly in an observation position; and a magnet for performing quasi-static testing of the head gimbal assembly when the head gimbal assembly is fixed in the mount, wherein the observation position and a testing position in a uniform area of the magnet are a predetermined distance apart.

Description

CROSS REFERENCE TO OTHER APPLICATIONS[0001]This application claims priority to U.S. Provisional Patent Application No. 60 / 922,096 entitled STAND ALONE QUASI STATIC TESTER AND CAMERA filed Apr. 6, 2007 which is incorporated herein by reference for all purposes.BACKGROUND OF THE INVENTION[0002]A read head assembly, or a head gimbal assembly (HGA), for a magnetic hard drive is tested before being assembled into a head stack assembly (HSA) and placed into a magnetic hard drive during production. Testing prevents the placement of an unqualified HGA in a hard drive. Dynamic testing of an HGA allows for a full suite of reading and writing tests to be performed. However, dynamic testing is time consuming and because of this expensive. If an HGA does not function well, a full suite of tests are not warranted. Quasi-static testing of an HGA allows for qualifying an HGA for dynamic testing or as a simple pass-fail test before placing an HGA in a drive. However, for quasi-static testing, proper...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01R33/12
CPCG11B5/455
Inventor GUZIK, NAHUMHODGKINSON, ADRIANRAY, FOREST
Owner GUZIK TECHN ENTERPRISES
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